“Sensoring” Bad Drivers

Sustainability Problem

  • Reduce gas usage in vehicles, which reduces CO2 emissions and related costs.

Summary of “The Fuel-Efficient Driver” by Daniel Gross

  • A matchbox-sized device with red, yellow and green lights is installed on the vehicle’s dash near the steering wheel. It objectively monitors 5 driving behaviors: hard breaking, acceleration, lane handling, cornering, and speeding.
  • Driving is a learned behavior. The GreenRoad device monitors the driver’s driving style in real time. When driving less efficiently—which wastes gas—the driver will receive a yellow or red status light. The driver will need to correct behavior for at least 10 minutes to return to the green status.
  • Good driving at consistent speeds (55 mph recommended) reduces fuel consumption between 4-5%. It also increases safety, reduces wear and tear on the vehicles, and reduces the number of accidents.
  • Data is transmitted to a centralized reporting hub. Driver reports are used to reward or correct drivers. In use, most drivers self-correct their behavior over a 3 week period using the status lights.
  • In one noted implementation the device was installed on a fleet of 2,400 busses with the target of reducing fuel consumption by 3%. A bus that drives 150,000 miles per year at 5 mpg uses 30,000 gallons of diesel. A 3% reduction saves $2,700 presuming a fuel price of $3/gallon.
  • The Energy Information Administration estimates that burning a gallon of diesel emits 22.38 pounds of CO2 . This  fuel savings would reduce CO2 emission by 20,145 pounds per year.


  • Companies with fleets of vehicles
  • Drivers
  • Mechanics
  • Oil & gas companies, producers and distributors
  • Mammals who breathe air
  • The environment


  • The $40 device can be installed on any vehicle.
  • Companies that run fleets of cars, trucks, or busses would see a quick return on investment in reduced aggregate costs, encouraging them to invest in the technology.
  • An online dashboard allows for real time tracking and monitoring reports to allow business owners to immediately begin tracking the behavior of their drivers.


One thought on ““Sensoring” Bad Drivers

  1. Great idea. I think we all are probably unaware of some of our driving behavior that may be considered unsafe and spend unnecessary fuel. I like how this product can make us aware of what we doing so that we can make the appropriate adjustments. There seems seems a tremendous market for commercial use. Commercial business owners that have fleets of vehicles can use this product to potentially reduce employee mishaps as well as reduce fuel costs. I would think that this would be a no brainer for municipality buss transportation.


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